Accession Number : ADA325730

Title :   Nonlinear Dynamics and Control of Wings and Panels.

Descriptive Note : Final rept. 1 Jul 94-30 Jun 96,

Corporate Author : DUKE UNIV DURHAM NC

Personal Author(s) : Dowell, Earl H. ; Virgin, Lawrence ; Clark, Robert

PDF Url : ADA325730

Report Date : 04 DEC 1996

Pagination or Media Count : 18

Abstract : A multidisciplinary team of experts in aeroelasticity, control and nonlinear dynamics will study experimentally and theoretically the control of prototypical aeroelastic systems. Emphasis will be given to those systems with significant nonlinear characteristics, e.g. freeplay structural behavior and aeroelastic stall behavior for airfoils and wings and geometrical structural behavior and aeroelastic stall behavior for airfoils and wings and geometric structural nonlinearities of panels (plates and shells). Research in nonlinear dynamics has reached a level of relative maturity such that applications to real engineering systems (including physical experiments) are the next major advance. Adaptive control strategies will be employed to attenuate both persistent and impulsive disturbances for nonlinear mechanical and aeroelastic systems will be used co aid in the design of distributed control structures with a focus on model-intensive control algorithms.

Descriptors :   *STRUCTURAL PROPERTIES, *AEROELASTICITY, *GEOMETRY, *WINGS, *AERONAUTICAL ENGINEERING, AIRFOILS, STALLING, NONLINEAR SYSTEMS, FLUTTER, MECHANICAL COMPONENTS.

Subject Categories : Aerodynamics
      Fluid Mechanics
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE